package com.web;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

@WebServlet("/logout")
public class LogoutServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        System.out.println("开始注销");
        HttpSession session = req.getSession();
        // 把整个 session 对象都给销毁掉
        session.invalidate();
        // 然后跳转到登录页面
        req.getRequestDispatcher("/login").forward(req, resp);
    }
}
